Tuofeng TFW-246 Dual-Column Microcomputer-Controlled Universal Testing Machine
| Brand | Tuofeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | TFW-246 |
| Instrument Type | Electromechanical Universal Testing Machine |
| Standards Compliance | GB/T 16491–2008, JJG 475–2008 |
| Max Test Load | 246 kN (customizable variants: 5–200 kN) |
| Accuracy Class | 0.5 |
| Effective Force Range | 0.2%–100% of full scale |
| Force Measurement Accuracy | ±0.005% of reading |
| Load Cell Resolution | 1 part in ±500,000 full-scale counts (no range switching, constant resolution) |
| Drive System | Imported servo motor with precision worm-gear reducer |
| Lead Screw | High-precision preloaded ball screw |
| Effective Test Width | 600 mm (expandable) |
| Stroke | 800 mm (height-adjustable) |
| Speed Range | 0.001–500 mm/min (infinitely variable, programmable) |
| Displacement Measurement | Optical encoder |
| Displacement Accuracy | ±0.005% of reading |
| Strain Measurement | Optional extensometer or large-deformation transducer (ASTM E83 / ISO 9513 compliant) |
| Strain Accuracy | ±0.005% of reading |
| Safety Systems | Electronic limit switches, emergency stop button, overload protection (>110% FS), dual-speed motorized crosshead control |
| Return Function | Auto-return to initial position at maximum speed post-test |
| Fixture Customization | Application-specific grips and tooling per ASTM D638, ISO 527, GB/T 228.1, etc. |
| Software | Windows-based, multi-language (EN/ZH-TR/ZH-S), configurable test modes (load-controlled, displacement-controlled, time-controlled), real-time curve plotting (F-t, F-δ, δ-t, σ-ε, F-ΔL), automatic parameter calculation (UTS, YS, E, Elongation, Modulus, Tear Strength, Peel Strength), statistical reporting (min/max/avg), batch comparison, GLP-compliant audit trail (optional), CFR 21 Part 11 ready (with validation package) |
Overview
The Tuofeng TFW-246 Dual-Column Microcomputer-Controlled Universal Testing Machine is a high-precision electromechanical system engineered for static mechanical characterization of metallic, polymeric, composite, ceramic, and elastomeric materials. It operates on the principle of controlled axial force application via a servo-driven ball-screw actuator, enabling accurate measurement of load, displacement, and strain under standardized quasi-static conditions. Designed to meet international metrological and regulatory requirements—including GB/T 16491–2008, JJG 475–2008, ASTM E4, ISO 7500-1, and EN 10002-2—the TFW-246 delivers traceable, repeatable results essential for R&D validation, quality assurance, and regulatory submissions. Its dual-column rigid frame minimizes deflection during high-load testing (up to 246 kN), while the zero-backlash preloaded ball screw ensures positional fidelity across the full stroke range.
Key Features
- Rigid dual-column structural design with reinforced base and crosshead—optimized for minimal frame compliance and high lateral stability during compression, bending, and shear tests.
- 0.5-class accuracy certified force measurement system with ±0.005% reading uncertainty and 1:500,000 internal resolution—maintained across the entire force range without auto-ranging.
- Imported industrial servo motor coupled to a low-backlash worm-gear reducer, delivering smooth, silent, and highly responsive motion control from 0.001 mm/min to 500 mm/min.
- Optical encoder-based displacement feedback with ±0.005% reading accuracy, synchronized with load data acquisition at up to 1 kHz sampling rate.
- Modular extensometry support: compatible with clip-on axial extensometers (ISO 9513 Class 1) and non-contact video extensometers for high-strain or brittle material applications.
- Comprehensive safety architecture: hardware-level electronic limits, redundant emergency stop circuitry, over-travel cut-off, and programmable load-based shutdown (>110% FS).
- Motorized crosshead with dual-speed jog mode—enabling rapid positioning and fine alignment prior to test initiation.
Sample Compatibility & Compliance
The TFW-246 accommodates specimens ranging from thin films (per ASTM D882) to structural steel coupons (per ASTM A370), with customizable fixtures for tensile, compression, flexure (3- and 4-point), shear, peel, tear, and puncture configurations. Standard compliance includes ASTM D638/D695/D790/D1876/D3330, ISO 527/604/178/1133, GB/T 228.1–2021, GB/T 1040, and JIS Z2241. All mechanical and software subsystems are designed to support GLP and GMP environments, with optional 21 CFR Part 11-compliant electronic signatures, user access controls, and immutable audit trails for regulated laboratories.
Software & Data Management
The embedded Windows-based testing software provides full IEC 61508-aligned control logic and supports six primary test modes: load control, displacement control, strain control, ramp-hold, cyclic loading, and creep/stress-relaxation protocols. Real-time visualization includes synchronized plots of force–time, stress–strain, load–displacement, and custom derivative curves. All raw data are stored in vendor-neutral CSV and XML formats; metadata (operator ID, calibration date, environmental conditions) is embedded automatically. Batch analysis tools enable statistical comparison across up to 100 specimens, with export-ready reports conforming to ISO/IEC 17025 documentation requirements. Firmware and software updates are delivered remotely, with version-controlled release notes and full backward compatibility.
Applications
This system serves as a core mechanical characterization platform across multiple sectors: aerospace (composite laminate interlaminar shear, titanium alloy tensile properties), automotive (seat belt webbing strength, battery module crush resistance), medical device manufacturing (stent radial strength, suture tensile integrity), construction materials (rebar yield behavior, concrete compressive modulus), and polymer R&D (thermoplastic melt strength, hydrogel viscoelastic recovery). Its modular architecture allows integration with environmental chambers (−70°C to +300°C), digital image correlation (DIC) systems, and acoustic emission sensors for advanced failure analysis.
FAQ
What standards does the TFW-246 comply with for force calibration and verification?
It conforms to ISO 7500-1:2018 (static calibration of force-proving instruments) and GB/T 16491–2008, with factory calibration traceable to NIM (National Institute of Metrology, China) and optionally to NIST or PTB upon request.
Can the system perform closed-loop strain control using an external extensometer?
Yes—when equipped with an ISO 9513 Class 1 axial extensometer or video-based non-contact system, the controller executes real-time strain feedback with sub-micron resolution and <0.1% linearity error.
Is the software validated for use in FDA-regulated environments?
A 21 CFR Part 11 validation package—including IQ/OQ documentation, electronic signature workflow, and audit trail configuration—is available as an optional add-on.
What is the maximum specimen height accommodated without modification?
Standard vertical clearance is 1,800 mm between platens; extended columns increase this to 2,600 mm for tall compression samples or fixture stacks.
How is mechanical maintenance tracked and documented?
The software logs all operational events—including motor temperature, drive current, encoder status, and limit switch triggers—with timestamped records exportable for preventive maintenance scheduling and ISO 9001 compliance audits.
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